Current trends in packaging leadless metal-polymer packages

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Abstract

«Cremniy El Group» JSC has successfully mastered the technology for assembling QFN and DFN leadless small-sized metal-polymer packages in five versions. The article considers the advantages and features of the assembly in a leadless metal-polymer packages design.

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About the authors

E. Abashin

АО «Группа Кремний Эл»

Author for correspondence.
Email: abashin@sitsemi.ru

инженер-конструктор 2 кат.

Russian Federation

S. Alekhin

АО «Группа Кремний Эл»

Email: salekhin@outlook.com

к. т. н., начальник ОСП

Russian Federation

A. Gavrilin

АО «Группа Кремний Эл»

Email: gavrilin@kremny.032.ru

директор по развитию и новой технике, начальник УРМЭТ и НТ

Russian Federation

O. Dantsev

АО «Группа Кремний Эл»

Email: dantsev@sitsemi.ru

заместитель директора по развитию и НТ, начальник ДЦ

Russian Federation

References

  1. John F. Electronic Packaging: Lead Frame Materials // Encyclopedia of Materials: Science and Technology. 2001.
  2. Frank E. Integrated Circuit Packaging // Encyclopedia of Physical Science and Technology (Third Edition). 2003.
  3. Lawrence C.A. Overview of developments in yarn spinning technology // Advances in Yarn Spinning Technology. 2010.
  4. Luo X. Chip packaging: encapsulation of nitride LEDs // Nitride Semiconductor Light-Emitting Diodes (LEDs). 2014.
  5. Патент № 180407 Российская Федерация, МПК H 01 L 23/495, H 01 L 23/48. Выводная рамка корпуса интегральной микросхемы: № 2018104586: заявл. 06.02.2018 : опубл. 13.06.2018 / Абашин Е.В., Брюхно Н.А., Минин А.В. 6 с.

Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 1. Main stages of microelectronic products encapsulation: a - eutectic soldering of ICs; b - ultrasonic unwelding of IC crystal; c - sealed product in lead-free metal-polymer version

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3. Fig. 2. Main types of leadless enclosures: a - QFN; b - DFN; c - LCC

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4. Fig. 3. Leading frame for the metal-polymer DFN-10 case obtained by laser burning method

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5. Fig. 4. Leading frame for the metal-polymer DFN-10 case obtained by chemical etching method

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6. Fig. 5. Current design of leadframes of leadfree metal-polymer enclosures of QFN and DFN types

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7. Fig. 6. Unwelded ICs in metal-polymer package DFN-6

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8. Fig. 7. DFN enclosures sealed with press material

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9. Fig. 8. Lead-free QFN-20 enclosures: a - after laser marking, b - after cutting from the lead frame

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Copyright (c) 2024 Abashin E., Alekhin S., Gavrilin A., Dantsev O.

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